Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

3 hosts · 205 ms

HostCertsFirst seenLast seenDNS
thedime.bank 22 2026-05-31 2026-10-01 ok
*.thedime.bank 22 2026-05-31 2026-10-01 —
email.fmgemail.thedime.bank 5 2026-05-11 2026-09-08 ok

Programmatic access, with DNS A records: API GET /v1/hosts/thedime.bank (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/thedime.bank.